Had the game from a non-GOG source. Imported the save and played a total of 20h using the GOG version i bought.

Then the crashes started.
First the game would take a few minutes to start, usually would start with a windowed blackscreen and then jump into fullscreen and the game would start.

Then it got worse. The game would start in windowed mode and stay that way. I had to go into setting and change it to fullscreen.

Now the game starts windowed and when I try to make it go into fullscreen I get a Resize Buffer failed 0x887a001.
On the plus side - no crashed during play time.

I have a Lenovo y700 with NVIDIA GeForce GTX 960M and an integrated Intel HD 5300.
I tried re-installing everything and removed any aps I had installed since the problems started.

This problem happens only when I play DL. All other games (both GOG and other) work just fine.

This never actually fixed anything because it would crash the moment I change the resolution in the setting. And now its even worse, because it still starts in window and crashes on its own on the title screen so I can't play it anymore. A re-install doesn't help.